oscillation; vibration; swing (e.g. of a pendulum)
characteristic vibration; normal mode
several; a number of; quantity; amount; counting; figures; number
resonance; sympathetic vibration
to grow up; to become an adult; to become big; to grow in size
agreement; concurrence; conformance; compliance
audible range; hearing range
individual differences; personal equation
ultrasonic waves; ultrasound
communication technology; communications technology
(practical) application; putting to practical use; applied
perception; sensation; awareness
vague recollection; faint memory
to fall below (esp. figures: profits, unemployment rate, etc.); to be less than; to be lower than; to fall just short of; to be just under
to hear; to listen (e.g. to music); to ask; to enquire; to hear about; to hear of; to follow (advice, order, etc.)
to face on; to look out on to
exterior; outside; outer; external; lateral
opposite side; opposition
not a little; not a few; considerable
to beat by a wide margin (in a race); to tear (off) roughly
thesis; essay; treatise; paper; article
presentation (of documents); submission (of an application, report, etc.); production (e.g. of evidence); introduction (e.g. of a bill); filing; turning in
to hinder; to obstruct; to disrupt; to interfere with; to cause a delay
treasure hunting; treasure hunt; lucky dip; game involving finding hidden prizes from a sand box, barrel of leaves, etc.
pollution; public nuisance; contamination
device; equipment; machinery; apparatus
to stick into (of something with a sharp point); to prick; to pierce; to resonate emotionally; to move
dead person; (the) deceased; (the) dead; casualties
about when; about what time; how soon
to plant; to transplant; to instil (idea, feeling, etc.)
to press a question; to cross-examine
often; again and again; frequently; repeatedly
alternately; by turns; one after the other
lucid dream; dream in which the dreamer is aware that they are dreaming
to dream (i.e. while asleep); to have a dream; to dream (of the future); to have a fleeting experience